Troubleshooting And Problem Solving; Overview; Initial Start-Up Problems - IBM 1269-3S2 Installation, Service And User Manual

Chapter 4
Troubleshooting and
Problem Solving

4.1 Overview

The IBM System Storage DCS9900 3S2 Storage Expansion Unit includes a processor and associated
monitoring and control logic to enable it to diagnose problems within the enclosure's power, cooling, and
drive systems.
The Enclosure Services Processor is housed along with the Ops Panel in the rear of the enclosure.
The sensors for power and cooling conditions are housed within the Power Supply/Cooling modules.
There is independent monitoring for each unit.
If a fault is indicated on the Ops Panel, please refer to

4.1.1 Initial Start-up Problems

4.1.1.1 Faulty Cords
First check that you have wired up the subsystem correctly. Then, if:
• cords are missing or damaged
• plugs are incorrect
• cords are too short
Call your supplier for a replacement.
4.1.1.2 Alarm Sounds On Power Up
Please refer to Section 4.2.
4.1.1.3 Physical Link LEDs on EBOD Module Not Lit
Check cable connectivity.
Table 4–2.
Troubleshooting
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